Possible Clues:

• Palliative plants
• Spiny-leaved plants
• "A Lesson From ___"
• Succulents that soothe
• "A Lesson from ___" (Fugard drama)
• Fugard's ''A Lesson From ___''
• Fugard's "A Lesson From ___"
• Fleshy medicinal plants
• Athol Fugard's 'A Lesson From ___'
• Plants used in first aid